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Finding the Fourth Proportional to 208,101.66, 287,180.79 and 112,609.38

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Solution

The fourth proportional to 208,101.66, 287,180.79 and 112,609.38 is: 155,401.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,101.66 : 287,180.79 = 112,609.38 : x
  2. Step 2: Convert to fraction form
    208,101.66/287,180.79 = 112,609.38/x
  3. Step 3: Cross multiply
    208,101.66x = 287,180.79 × 112,609.38
  4. Step 4: Simplify right side
    208,101.66x = 32,339,250,709.81
  5. Step 5: Solve for x
    x = 32,339,250,709.81/208,101.66
  6. Step 6: Final answer
    x = 155,401.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.